diff --git a/requirements.txt b/requirements.txt
index 5670c83..8af6cc7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,3 +41,4 @@ sphinxcontrib-websupport==1.0.1
 typing==3.6.2
 urllib3==1.22
 Whoosh==2.7.4
+setuptools>=70.0.0 # not directly required, pinned by Snyk to avoid a vulnerability